* {
	margin: 0;
	padding: 0;
}

.nav {
	margin: auto;
	width: 100px;
}

.nav ul li {
	width: 100px;
	height: 50px;
	background-color: orange;
	list-style: none;
	position: relative;
}

.nav ul li a {
	text-decoration: none;
	color: white;
	text-align: center;
	display: block;
	line-height: 50px;
}

.nav ul li a:hover {
	background-color: white;
	color: orangered;
}

.u2 {
	width: 300px;
	position: absolute;
	left: 100px;
	top: 0;
	display: none;
}

.u2 li {
	float: left;

}

.nav ul li:hover .u2{
	display:block;
}